In the first three parts of the series (one, two, GUI-centric SAP systems design, part 3) I was discussing what problems one can discover, when modeling the SAP system and its user interfaces. I think it was enough to express the need for such modeling. The most important question to get the whole picture about how to build a model is about what do the interfaces and the user groups in common. Or better: how can we measure quality of the relationship between the user interfaces and the users. Or the best: how exactly we can tell if the interface abilities match the user group members´ needs?
Let´s work with the example: how can one tell if the SAP GUI (like PPOME transaction or something - replace by your own favorite transaction, which is not totally trivial) is suitable for your CEO? Of course it is not suitable for him at all, but why? Get a pen and try to write down few ideas why do you think he (or she) would not like it. Is that because he would not like the colors? Probably not. Is that because he would not like the navigation and complexity of the interface? Probably yes. He would not like to operate in SAP GUI without a proper training for which he does not have time. And so on. You can come up with your own set of reasons.
I have used the following set of criteria (I am afraid some of them can be confusing/ not self-explanatory, but I don´t want to double the length of this blog describing all of them in a detail). You can change the criteria, add some, remove some, as you like, the "model" is flexible.
Computer skills:
Costs:
Daily routine:
Of course the evaluation of the criteria set both for the users and the interfaces will not be exact and objective but it should help you get a rough idea about where the bottlenecks of the user productivity may be hidden and if the realignment of the user interfaces is needed or not.
From the example the idea/ the message should be understandable (I hope). The interface offers something or requires something and so does the user. If the user need matches the interface offer and the user can make it with the interface demands, then a suitable pair is found.
I will elaborate on the pairs in the next part, Otto
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